Chess960 bug - castling through check
Chess forum

In this game (https://www.littlegolem.net/jsp/game/game.jsp?gid=1929134&nmove=35) I played Qg4 on move 18 in order to prevent castling, as the King would have been travelling through the c8 square now attacked by my Queen. However he castled anyway, I have played Chess960 live several times and and fairly sure this should not be allowed.